Retractable jambs for reversible windows



March 10, 1959 H. c. KNEBEL RETRACTABLE JAMES FOR REVERSIBLE WINDOWS Fiied Sept. 27, 1956 2 Sheets-Sheet 1 INVENTOR. HERMAN C. KNEBEL ATTORNEYS his March 10, 1959 H. c. KNEBEL 2,876,506

RETRACTABLE JAMES FOR REVERSIBLE WINDOWS 'INVENTOR, HERMAN G. KNEBEL.

his ATTORNEYS it d 51m,

RETRACTABLE JAMES FOR REVERSIBLE WINDOWS Hennan C. Knebel, Westbury, N'. Y assignor to S. H;

invention relates to awindow of the type in whieh the sash may be rotated about a center pivot in order to reverse the sash to' facilitate cleaning the outer surface of the window pane mounted in the sash. Win- (lows of this" general organization are advantageously used in air conditioned buildings where the windows are kept closed except for cleaning.

More specifically the present invention relates to a window structure of this type wherein a manual operated cami controls the movement of a Weatherstrip holder in order to move the Weatherstripping carried thereby into sealing engagement with one edge of the sash when the sash is in closed position or separate the Weatherstripping from said edge of the sash in order to free the sash for pivotal rotation about its center axis.

A further feature of the window structure of the present invention is that the manually operated cain which controls the movement of the Weatherstrip holder also controls the operation of sash locking means whereby the operation of the cam in order to bring'the weathers'tripping into sealing engagement With the sash also moves the locking means into locking engagement with the sash, and the operation of the to separate the Weatherstripping from the sash r' noves the locking means outof locking engagement with the sash.

F of a. complete understanding of the present invention reference maybe made to the" detailed descriptionwhich follows and to the accompanying drawings in which;

Figure 1 is a! front elevation of the window structure embodying the present invention;

Figure 2 is across sectional view taken generally along the line 2''-2 of Figure 1 looking in the direction of the arrows showing the parts in locked position;

Figure 3 is a view generally similar to Figure: 2 but showing the parts in unlocked position;

Figure 4 is a cross section view of the window structure similar to Figure 4 but illustrating an additional sash-locking device;

Figure 5 is a cross section view taken generally along the line 5-5 of Figure 1 looking in the direction of the arrows; and

Figure 6 is a cross section view taken generally along the line 66 of Figure 2 looking in the direction of the arrows.

Referring to Figure 1 of the drawings, a sash 10 having a window pane 11 mounted therein is pivoted about its vertical center axis on pins 13 and 14. As best shown in Figure 5, the pin 13 is mounted in a housing 15 attached to the hollow channel member 16 which forms the horizontal header of the window, and the lower end of the pin 13 engages a sleeve or bearing 17 anchored to the upper edge of the sash. The pin 14 is similarly mounted and extends upwardly of a hollow channel member 20 which forms the sill of the window. The pins 13 and 14 are coincident with the vertical center axis of the sash, and as mentioned above permit the sash to be pivoted thereon and reversed to facilitate cleaning of the 2,876,506 Patented Mar. 10, 1959 2 out'en surface of thesash and Window pane from the interior of the building.

As best shown in Figure 5, the upper and lower edges of the sash 11 are provided with a pair of parallel grooves 21 which extend continuously along the length of the sash on opposite sides of the pins 13 and 14. These grooves 21 accommodate wiper type Weatherstrips 22 which are wedged within the grooves. When the sash is pivoted to closed position the upper weather'strips 22 yieldingly engage the channel member 16 and the lower weatherstrips yieldingly engage the channel member 20.

Vertically disposed channel members 25 which form the jambs" of the window frame aeco'mmodate movable Weatherstripholders 26' therein As shown in Figure 6, opposite ends of the movable Weatherstrip holders 26 are provided withextended shaft portions- 26a which are fotatably mounted in bearings formed in the horizontal flanges 27of the channel members 25. The weatherstrip hold'ei's" 26 are provided with a pair of teeth 28 between which a flexible Weatherstrip 29 is wedged.

When the Weatherstrip holder 26 is pivotally moved in a clockwise direction, as viewedin Figures 2 and 3, to the position illustrated in Figure 2,- the Weatherstrip 29 is moved through a verticalslot defined by the parall'el edges 30 and 31- of the channel member 25 into yielding engagement with the edge of the sash 10 and with the edge 30' of the hollow channel member 25. Inasmuch as the Weatherstrip 29 extends continuously between the upper and lower horizontally disposed weatherstrips 22, a weather tigh-t sealis thus formed between the edge of the sash and the channel member 25 forming the ja-inb of the window. When the Weatherstrip holder is movedin a counterclockwise direction to the position illustratedin Figure 3; the Weatherstrip 29 is moved out of sealing engagement with the edge of the sash and the edge 30 of the channel member 25', and the weatherstrip is sufiiciently retracted to free the edge of the sash to permit it to be rotated about the pins 13 and 14.

A segment portion 34 is formed integrally with the Weatherstrip holder 26 and this segment portion 34 is disposed between a pair of leg member's 25a and 25b for-med integrally with the channel member 25. The segment portion 34- may extend the entire length of the Weatherstrip holder 26. The surfaces of the leg portions 251: and 25b which engage the segment portion 34 of the Weatherstrip holder 26 form continuous guide surfaces, for the Weatherstrip holder throughout its entire length. These guide surfaces prevent bending or bowing of the Weatherstrip holder and eliminate any looseness or play therein which would prevent the Weatherstripping from being moved into uniform sealing engagement with the edge of the sash. Accordingly, the guide surfaces of the leg portions 25a and 25b are curved to provide complementary surfaces with the adjacent surfaces of the segment portion 34 which they engage. In addition, a stainless steel strip 35 is afiixed to and surrounds the segment portion 34 in order to reduce friction and to prevent excessive wear between the complementary surfaces of the segment portion 34 and the legs 25a and 25b.

The pivotal movement of the Weatherstrip holder 26 is controlled by a manually operated shaft 37 rotatably mounted within a housing 38. The housing 38, in turn, is mounted within the hollow channel member 25. A locking pawl 39 is attached eccentrically to the shaft 37, and a cam 40 is attached to the locking pawl 39. The rotation of the shaft 37 moves the locking pawl 39 into and out of engagement with a recessed slot 41 "formed in the edge of the sash 10. In Figure 2 the locking pawl is shown in locking engagement with the sash 10, and in Figure 11 the locking pawl 39 is shown in unlocked position. In order to permit the movement of the locking pawl 39 into and out of engagement with the recess 41 in the edge of the window sash a slot 42 (see Fig. 3) is provided in the channel member 25.

The cam 40 controls the pivotal. movement of the Weatherstrip holder 26. Accordingly, the cam 40 is interposed between two cam follower'arms 43, 44 of the Weatherstrip holder which are disposed on oppositesides of the cam 40. The cam follower arms 43 and 44 are formed integrally with a piece 44a which isanchored to the Weatherstrip holder 26 by one or more screws 47. It will be understood, therefore, that a positive movement in either a clockwise or counterclockwise direction is imparted to the Weatherstrip holder 26 by the rotation of the cam 40. I v v The rotation of the shaft 37 is effected, by a crank member 50 (shown in phantom lines in Figures 2 and 3) having a key head 51 thereon which is insertable through a keyhole 52 formed in the channel member 25. The key head 51 is provided with a non-circular tongue which when the key head is properly connected to the end of the shaft 37 is insertable into a non-circular opening 53 formed in the end of the shaft 37. The use of a key of this type to lock and unlock the sash is desirable in order that only authorized persons will be able to lock and unlock the sash.

If desired, an auxiliary lock may be provided in addition to the locking pawl 39. The auxiliary lock consists of a plunger 55 slidably accommodated within a hollow housing 56. The plunger 55 is normally urged by compression spring 58 into engagement with another portion of the groove or recess 41 formed in the edge of the sash. A handle 55a extends outwardly from the plunger 55 extending through a slot 56a formed in the housing 56 and a slot 57 formed in the channel member 25. By slidably moving the handle 55 against the action of the compression spring 58, the plunger 55 may be disengaged with the recess and moved to unlocked position. This type of locking device may be" used in lieu of the locking pawl 39 if desired. Preferably, however, it is used to supplement the locking action of the locking pawl 39, being spaced apart at some distance from the locking pawl 39 to provide a two point lock for the sash so that one corner of the sash cannot be forced open.

The invention has been described in preferred form and by way of example only, and obviously many variations and modifications may be made therein without departing from the spirit of the invention. For example, it'might be advantageous to locate cam 40 at the center of the jamb height, instead of at the lower position shown. The invention, therefore, is not to be limited to any specified form or embodiment, except in so far as such limitations are set forth in the appended claims.

I claim: 1

1. A window structurecomprisinga sash, means'for "aevasosof the hollow pivotally mounting the sash about the center axis, a hollow frame member adjacent an edge of the sash when the sash is in closed ptisition, an elongated weatherstrip holder pivotally mounted within the hollow frame member, Weatherstripping carried by the pivotal weatherstrip holder, a sash-locking pawl rotatably mounted within the hollow frame member, a cam connected to the sash-locking pawl in fixed relationship thereto, a rotatable shaft for rotating the locking pawl and the cam in unison, a recess formed in the edge of said sash, said recess receiving a portion of the locking pawl therein when the locking pawl is moved to sash-locking position, cam follower means carried by the pivotal Weatherstrip holder and disposed on opposite sides of the cam so as to be engaged by the cam surface, whereby the rotation of the cam pivotally moves the Weatherstrip holder to ward or away from the sash in closed position, and an elongated slot formed in the hollow frame member to permit the Weatherstripping to be moved into sealing engagement with the edge of the sash and with an edge frame member which defines the elongated slot, thereby sealing the'spacebetwe'en the hollow frame member and the edge of the sash when the sash is in closed position.

2. A window structure as set forth in claim 1 including a pair of fixed curved guide surfaces intermediate the opposite ends of the Weatherstrip holder, and complementary surfaces formed on said Weatherstrip holder intermediate curved guiding surfaces.

3. A window structure as set forth in claim 1 including a hollow housing accommodated within the hollow frame member, a spring urged auxiliary lock slidably mounted in said housing, said lock being spaced apart from said sash-locking pawl, a recess formed in the edge of said sash, a handle attached to said slidable lock and extending through aligned slots in the housing and in the hollow frame member, whereby the movement of the handle within the aligned slots permits the disengagement of the slidable lock from the recess when it is desired to reverse the sash.

4. A window structure as set forth in claim 1 including a handle detachably connected with the end of said rotatable shaft, and a keyhole formed in the hollow frame member to permit the handle to be coupled with the shaft.

References Cited in the file of this patent UNITED STATES PATENTS 713,414 Essig Nov. 11, 1902 2,090,349 Grady Aug. 17, 1937 2,268,114 Foster et al. Dec. 30, 1941 2,805,451 Evans et al. Sept. 10, 1957 

